18kW Rack-Mount DC Telecom Power System, Module Rectifier System for Telecom, >96% High Efficiency

Product Overview

The 18kW rack-mounted DC power system is a high-capacity solution designed for telecom networks, data centers, and industrial facilities requiring reliable DC supply. It supports 220V single phase input, delivering a stable –43 to –58VDC output with a rated value of –53.5VDC. With a maximum capacity of 18kW, this system ensures sufficient power for large-scale applications while maintaining efficiency above 96%.

The system integrates up to 6 rectifier modules(N+1 redundancy), each rated at 3000W and weighing ≤2kg. These modules feature forced cooling, high power factor ≥0.99, and THD ≤5%, ensuring clean and stable DC power conversion. With front maintenance, top cable entry, and IP20 protection, the design prioritizes safety, serviceability, and ease of integration into 19-inch racks.

DC distribution includes 2*125A battery breakers and 1*LLVD & 1*BLVD, providing flexible and secure load management. The intelligent controller supports 3 analog inputs, 7 digital inputs, 6 dry contact alarms, and remote communication via RS232/485 and SNMP. Local monitoring is enabled through an LCD display.

Built for challenging environments, the unit operates from –40℃ to +65℃, withstands 5–95% non-condensing humidity, and maintains stable operation at altitudes up to 3000m. With its modular architecture and robust performance, the 18kW 5U DC power system is an ideal choice for critical infrastructure requiring scalable and dependable energy solutions.

System

• Dimension: 482.0(W) × 350.0(D) × 5U(H)

• Weight: ≤25kg (without rectifiers)

• Cooling mode: Natural cooling

• Installation mode: Installed on 19-inch rack or inside the cabinet

• Cabling mode: Top inlet and top outlet

• Maintenance mode: Front maintenance, support module grade change

• Protection level: IP20

AC Distribution

• Input mode: 220V single phase

• Input frequency: 45–66Hz, rated value: 50Hz/60Hz

• AC SPD: 20kA/40kA, 8/20μs

DC Distribution

• Output voltage: –43 ~ –58VDC, rated value: –53.5VDC

• Maximum capacity: 18kW(6*3kw, N+1 redundancy)

• Battery breakers: 2*125A

• Load breakers:

• LLVD1: 3*16A/1P+3*32A/1P;

• BLVD: 2*63A/1P+4*100A*1P

• DC SPD: 10kA, 8/20μs

Rectifier

• Input voltage: 380VAC three-phase

• Efficiency: >96%

• Rated power: 3000W (176–300VAC)

• Working temperature: –40℃ ~ +75℃ (full output below 50℃)

• Dimension: 106.5mm(W) × 286mm(D) × 41.5mm(H) (1U/H)

• Weight: ≤2kg

• Cooling mode: Forced cooling

• Power factor: ≥0.99

• THD: ≤5%

• DC output: –43 ~ –58VDC, rated –53.5VDC, maximum 55A

Controller

• Signal input: 3 AI (2 Battery temp., 1 ambient temp), 7 DI

• Alarm output: 6 dry contact

• Communication port: RS232/485, SNMP

• Display mode: LCD

Environment

• Operating temperature: –40℃ ~ +65℃ (full output below 50℃)

• Storage temperature: –40℃ ~ +70℃

• Operating humidity: 5% ~ 95% (non-condensing)

• Altitude: 0 ~ 3000m (If the altitude is within the range of 2000m to 3000m, the maximum operating temperature decreases by 1℃ as the altitude increases by 200m.)

Module Rectifier System

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